JP6537835B2 - Hydraulic oil tank - Google Patents

Hydraulic oil tank Download PDF

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JP6537835B2
JP6537835B2 JP2015009896A JP2015009896A JP6537835B2 JP 6537835 B2 JP6537835 B2 JP 6537835B2 JP 2015009896 A JP2015009896 A JP 2015009896A JP 2015009896 A JP2015009896 A JP 2015009896A JP 6537835 B2 JP6537835 B2 JP 6537835B2
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hydraulic oil
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oil tank
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竜輔 栗野
竜輔 栗野
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Mitsubishi Logisnext Co Ltd
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Description

本発明は、油圧機器搭載車両における油圧機器用の作動油タンクに関するものである。   The present invention relates to a hydraulic oil tank for hydraulic equipment in a hydraulic equipment-equipped vehicle.

フォークリフト、リーチスタッカなどの産業車両における油圧機器を駆動させるための作動油を貯溜する作動油タンクとして、たとえば、特許文献１のようなものがある（図６参照）。特許文献１に記載されている発明では、作動油タンク３０の開口部３１に、この開口部３１の周縁の形状に合致する金属製ブラケット３２がインサート成形されている。このブラケットには、予め複数のネジ穴３３が設けられており、このネジ穴３３を介して、油漏れ防止用のシール部材３４と作動油タンク３０の開口部３１のサイズよりも大きくされた金属製板３５とが取付ネジ３６を介して上記ブラケット３２に取り付けられている。また、上記金属製板３５には、この板面に直交するように作動油管３７が貫通して取り付けられている。   As a hydraulic oil tank which stores hydraulic oil for driving hydraulic equipment in industrial vehicles, such as a forklift and a reach stacker, for example, there is one like Patent Document 1 (see FIG. 6). In the invention described in Patent Document 1, a metal bracket 32 conforming to the shape of the peripheral edge of the opening 31 is insert-molded in the opening 31 of the hydraulic oil tank 30. The bracket is provided in advance with a plurality of screw holes 33, and through the screw holes 33, a metal made larger than the sizes of the seal member 34 for oil leakage prevention and the opening 31 of the hydraulic oil tank 30 A plate 35 is attached to the bracket 32 via an attachment screw 36. Further, a hydraulic oil pipe 37 is attached to the metal plate 35 so as to be perpendicular to the plate surface.

特開２００２−１９５２０２Patent document 1: JP-A-2002-195202

しかし、上記従来の構成によると、作動油タンク３０からの油漏れを防止するためにシール部材３４が必要であり、また、作動油管３７を間接的に作動油タンク３０に取り付けるために金属製板３５が必要となる。さらに、シール部材３４および金属製板３５を作動油タンク３０に取り付けるために、複数のネジ穴３３を切った金属製ブラケット３２が必要となる。したがって、部品点数および製造工数が増えるとともに、作動油タンクの組立て作業が面倒になるという問題があった。   However, according to the above conventional configuration, the seal member 34 is required to prevent oil leakage from the hydraulic oil tank 30, and a metal plate is used to indirectly attach the hydraulic oil pipe 37 to the hydraulic oil tank 30. You need 35. Furthermore, in order to attach the seal member 34 and the metal plate 35 to the hydraulic fluid tank 30, a metal bracket 32 with a plurality of screw holes 33 cut is required. Therefore, the number of parts and the number of manufacturing steps increase, and there is a problem that the work of assembling the hydraulic oil tank becomes troublesome.

そこで、本発明は、作動油タンクの組立て作業を容易に行い得る作動油タンクを提供することを目的とする。   Therefore, an object of the present invention is to provide a hydraulic oil tank which can easily perform an assembling operation of the hydraulic oil tank.

この目的を達成するため、本願の請求項１に係る作動油タンクは、油圧機器を搭載した車両に設けられて当該油圧機器の作動油を貯溜するとともに作動油の送出用および戻り用の油管を具備する作動油タンクであって、
作動油タンク本体の上壁部に設けられた作動油の送出口および戻り口にそれぞれ着脱自在に設けられて上記油管が挿通される穴部がそれぞれ形成された一対の管取付部材を具備するとともに、
上記各管取付部材の外周面に断面が三角形状の環状突起をその軸方向に沿って所定間隔置きに複数条形成するとともに、その穴部の内周面に所定間隔を有して少なくとも２本の環状凸部または環状凹部を形成し、
さらに上記各油管を管取付部材の穴部に挿通させて取り付ける際に、上記環状凸部または環状凹部に係合し得る環状凹部または環状凸部を各油管の外周面に形成したことを特徴としている。 In order to achieve this object, the hydraulic oil tank according to claim 1 of the present invention is provided in a vehicle equipped with a hydraulic device, stores hydraulic oil of the hydraulic device, and delivers oil pipes for delivery and return of hydraulic oil. A hydraulic oil tank equipped with
A hydraulic oil tank main body has a pair of pipe attachment members detachably provided at a delivery port and a return port of hydraulic oil provided at an upper wall portion of the hydraulic oil tank main body and having holes formed therein for inserting the oil pipe. ,
A plurality of annular projections each having a triangular cross section are formed at predetermined intervals along the axial direction on the outer peripheral surface of each of the above-mentioned pipe attachment members, and at least two at a predetermined interval on the inner peripheral surface of the hole. Form an annular projection or an annular recess,
Furthermore, when the above-mentioned oil pipes are inserted through the holes of the pipe mounting member and attached, an annular recess or an annular convex which can be engaged with the annular convex portion or annular concave portion is formed on the outer peripheral surface of each oil pipe There is.

また、請求項２に係る作動油タンクは、請求項１に記載の作動油タンクにおいて、
送出用の油管の作動油タンク本体内の端部に円筒形状のフィルタを取り付けるとともに、当該送出用の油管の外周面に形成された環状凸部または環状凹部により、作動油タンク本体内での送出用の油管の長手方向における位置決めを行うようにしたことを特徴としている。 The hydraulic oil tank according to claim 2 is the hydraulic oil tank according to claim 1
A cylindrical filter is attached to the end of the hydraulic oil tank main body of the oil pipe for delivery, and the annular convex part or annular concave formed on the outer peripheral surface of the oil pipe for delivery enables the delivery in the hydraulic oil tank main body. It is characterized in that the positioning in the longitudinal direction of the oil tube for use is performed.

請求項１に係る作動油タンクによれば、管取付部材のみによって、油管を作動油タンクに取り付けることができる。そのため、部品点数および製造工数を削減できるとともに、作動油タンクの組立て作業を容易に行うことができる。   According to the hydraulic oil tank pertaining to the first aspect, the oil pipe can be attached to the hydraulic oil tank only by the pipe attachment member. Therefore, the number of parts and the number of manufacturing steps can be reduced, and the assembly operation of the hydraulic oil tank can be easily performed.

また、請求項２に係る作動油タンクによれば、作動油タンク本体内において油管に取り付けられるフィルタの位置は、油管の外周面に形成された環状凸部または環状凹部により最適位置に配置される。そのため、作動油タンクの組立ての際に、作動油タンク内のフィルタの位置を最適な位置にするのに、位置決めを意識する必要がないため、組立て作業を容易に行うことができる。   In the hydraulic oil tank according to the second aspect, the position of the filter attached to the oil pipe in the hydraulic oil tank main body is disposed at the optimum position by the annular convex portion or the annular concave portion formed on the outer peripheral surface of the oil pipe . Therefore, in assembling the hydraulic oil tank, the assembling operation can be easily performed because it is not necessary to be aware of the positioning for optimizing the position of the filter in the hydraulic oil tank.

本発明の実施例に係る作動油タンクの概略斜視図である。It is a schematic perspective view of the hydraulic fluid tank concerning the example of the present invention. 同作動油タンクの断面図である。It is sectional drawing of the hydraulic fluid tank. 同作動油タンクにおける管取付部材の正面図である。It is a front view of the pipe attachment member in the hydraulic fluid tank. 同作動油タンクの要部半断面図である。It is a principal part half cross-sectional view of the hydraulic fluid tank. 同作動油タンクの組立て手順を示す概略斜視図である。It is a schematic perspective view which shows the assembly procedure of the hydraulic oil tank. 従来例に係る作動油タンクの概略斜視図である。It is a schematic perspective view of a hydraulic fluid tank concerning a conventional example.

以下、本発明の実施例に係る作動油タンクを図面に基づいて説明する。
本発明に係る作動油タンクは、フォークリフト、リーチスタッカなどの油圧機器搭載車両に設けられ、油圧システムの一部を構成するものである。 Hereinafter, a hydraulic oil tank according to an embodiment of the present invention will be described based on the drawings.
The hydraulic oil tank according to the present invention is provided in a hydraulic device-equipped vehicle such as a forklift and a reach stacker, and constitutes a part of a hydraulic system.

図１および図２に示すように、この作動油タンク１における略直方体状のタンク本体１aの上壁部５には、一対の円形状の口部６が設けられており、これら各口部６には、それぞれ油管３が管取付部材２を介して設けられている。また、これら各油管３のタンク本体１a内における先端部には、作動油中の異物を除去するための円筒形状のフィルタ４がそれぞれ設けられている。上記各油管３は、それぞれ、タンク本体１a内の作動油を各油圧機器に送出するための油管（以下、送出管３aという）と、タンク本体１a内から送出され各油圧機器を回ってきた作動油を再びタンク本体１a内に戻すための油管（以下、戻り管３bという）である。上記フィルタ４は、それぞれ、送出管３aのタンク本体１a内における端部に設けられるとともにタンク本体１a内の作動油中における異物が油管３へ侵入するのを阻止するための送出フィルタ４aと、同様に戻り管３bの端部に設けられるとともに油圧システムを循環した後の作動油中の異物を除去するための戻りフィルタ４bである。上記一対の口部６は、これら送出管３a、戻り管３bに対応したものであり、それぞれ、管取付部材２を介して、送出管３aが取り付けされるための送出口６a、戻り管３bが取り付けられるための戻り口６bである。これら、送出口６a、戻り口６bの周縁には、上方に突出するとともに、管取付部材２と嵌合し得る円形の突出縁部７が形成されている。また、図示しないが、上壁部５には、エアブリーザが取り付けられるとともに、給油を行うための給油口が設けられている。このような構成において、例えば油圧ポンプなどによって、タンク本体１a内から吸引された作動油は、送出管３aを通って送出され、各油圧機器を駆動させた後、戻り管３bを通ってタンク本体１a内に戻ってくる。   As shown in FIGS. 1 and 2, a pair of circular openings 6 are provided on the upper wall 5 of the substantially rectangular parallelepiped tank main body 1 a of the hydraulic oil tank 1. Each of the oil pipes 3 is provided via the pipe mounting member 2 in each case. In addition, cylindrical filters 4 for removing foreign substances in the hydraulic oil are respectively provided at tip portions of the respective oil pipes 3 in the tank main body 1a. Each oil pipe 3 is an oil pipe (hereinafter referred to as a delivery pipe 3a) for delivering the hydraulic oil in the tank body 1a to each hydraulic device, and an operation for delivering the hydraulic oil from within the tank body 1a and rotating each hydraulic device. It is an oil pipe (hereinafter referred to as return pipe 3b) for returning the oil back into the tank body 1a. The filters 4 are respectively provided at the end of the delivery pipe 3a in the tank body 1a and are similar to the delivery filter 4a for preventing foreign matter in the hydraulic oil in the tank body 1a from entering the oil pipe 3. The return filter 4b is provided at the end of the return pipe 3b and is for removing foreign substances in the hydraulic oil after circulation through the hydraulic system. The pair of mouth parts 6 correspond to the delivery pipe 3a and the return pipe 3b, and the delivery port 6a and the return pipe 3b for attaching the delivery pipe 3a through the pipe attachment member 2 are respectively It is a return port 6b for being attached. On the peripheries of the delivery port 6a and the return port 6b, there are formed circular projecting edge portions 7 that can be projected upward and can be fitted with the pipe attachment member 2. Further, although not shown, the upper wall portion 5 is provided with an air breather and an oil supply port for refueling. In such a configuration, the hydraulic fluid sucked from within the tank body 1a by, for example, a hydraulic pump or the like is delivered through the delivery pipe 3a, drives each hydraulic device, and then passes through the return pipe 3b. Come back in 1a.

上記実施例において、タンク本体１aは、鉄製のものを用いるが、鉄製に限らず、ステンレス製、合成樹脂製などであってもよい。また、フィルタ４は、少なくとも送出管３aに取り付けられていればよく、送出管３aおよび戻り管３bの双方に取り付けられていなくてもよい。   In the above embodiment, although the tank body 1a is made of iron, it is not limited to iron, and may be stainless steel, synthetic resin, or the like. Also, the filter 4 may be attached to at least the delivery pipe 3a, and may not be attached to both the delivery pipe 3a and the return pipe 3b.

管取付部材２について、図１、図３および図４に基づいて説明する。管取付部材２は、外径を２段階に変化させた円柱状の弾性体（例えばゴムなど）からなり、その軸心を貫くように、油管３を挿通するための穴部８が形成されている。本実施例では、一対の管取付部材２が用いられ、送出口６aに取り付けられるとともに送出管３aが挿通される送出管用取付部材２aと、戻り口６bに取り付けられるとともに戻り管３bが挿通される戻り管用取付部材２bとである。   The pipe attachment member 2 will be described based on FIG. 1, FIG. 3 and FIG. 4. The pipe mounting member 2 is formed of a cylindrical elastic body (for example, rubber etc.) whose outer diameter is changed in two steps, and a hole 8 for inserting the oil pipe 3 is formed to penetrate the axial center thereof. There is. In this embodiment, a pair of pipe attachment members 2 are used, attached to the delivery pipe attachment member 2a attached to the delivery port 6a and through which the delivery pipe 3a is inserted, and attached to the return port 6b and through which the return pipe 3b is penetrated. It is with the attachment member 2b for return pipes.

これら管取付部材２は、内径については全体に亘って一様とされているが、外径については上述したように２段階に亘って変化されている。詳細には、管取付部材２の上部付近（以下、頭部９という）の外径が、これより下部（以下、胴部１０という）の外径よりも大きく形成されている。これにより、管取付部材２の頭部９と胴部１０とでは外径差が生じる。この外径差によって、管取付部材２の頭部９と胴部１０との境界の外周面には、取付時、上記突出縁部７に引っ掛かり得る顎部１１が形成される。すなわち、送出管用取付部材２aにおける頭部９の外径は、顎部１１が突出縁部７に引っ掛かるように、送出口６aの外径よりもある程度大きく形成されている。また、戻り管用取付部材２bにおける頭部９の外径も同様に、戻り口６bの外径よりも大きく形成されている。また、各胴部１０の外径は、送出口６aまたは戻り口６bの外径よりも若干大きく形成されている。
胴部１０の外周面には、断面が三角形状の環状突起１２が、その軸方向において所定間隔置きに４条形成されている。この管取付部材２の内周面には、送出管３aまたは戻り管３bの外周面に設けられた環状凹部１４（後述する）に係合し得る２本の環状凸部１３が、軸方向において所定間隔を有して形成されている。 The tube mounting members 2 are uniform throughout the inside diameter, but are changed in two stages as described above for the outside diameter. Specifically, the outer diameter near the upper portion (hereinafter referred to as the head portion 9) of the pipe mounting member 2 is formed larger than the outer diameter of the lower portion (hereinafter referred to as the trunk portion 10). As a result, an outer diameter difference occurs between the head portion 9 and the body portion 10 of the pipe attachment member 2. Due to the outer diameter difference, a jaw portion 11 that can be caught on the projecting edge portion 7 is formed on the outer peripheral surface of the boundary between the head portion 9 and the body portion 10 of the tube mounting member 2 when mounted. That is, the outer diameter of the head portion 9 in the delivery pipe attachment member 2a is formed to be somewhat larger than the outer diameter of the delivery port 6a so that the jaws 11 catch on the projecting edge 7. Further, the outer diameter of the head portion 9 in the return pipe mounting member 2b is similarly formed larger than the outer diameter of the return port 6b. Further, the outer diameter of each barrel 10 is formed to be slightly larger than the outer diameter of the delivery port 6a or the return port 6b.
On the outer peripheral surface of the body 10, four annular projections 12 having a triangular cross section are formed at predetermined intervals in the axial direction. On the inner peripheral surface of the pipe mounting member 2, two annular convex portions 13 which can be engaged with an annular recess 14 (described later) provided on the outer peripheral surface of the delivery pipe 3a or the return pipe 3b It is formed with a predetermined interval.

胴部１０の外径は、送出口６aまたは戻り口６bの外径よりも若干大きく形成されていると述べたが、この外径は、弾性体たる管取付部材２の弾性により、送出口６aまたは戻り口６bへの挿入時に径を押し縮めることでこれらに挿入し得る大きさであればよい。この挿入の際には、上記環状突起１２は、突出縁部７の内周面に接触するが、挿入時に押し縮められた径が、元の径に戻ろうとする弾性力によって突出縁部７の内周面から圧力を受け押し潰される。これにより、送出口６aまたは戻り口６bからの油漏れを確実に防止することができ、また、管取付部材２の抜け止めの効果を奏する。この環状突起１２は、油漏れを防止するためのもので、複数条形成されていればよく、４条に限らない。また、このように、管取付部材２は弾性体であるため、着脱を自在にすることができる。   Although the outer diameter of the trunk portion 10 is described to be formed slightly larger than the outer diameter of the delivery port 6a or the return port 6b, the outer diameter is the delivery port 6a due to the elasticity of the tube attachment member 2 which is an elastic body. Alternatively, it may have a size that can be inserted into the return port 6b by compressing the diameter thereof. During this insertion, the annular projection 12 contacts the inner peripheral surface of the projecting edge 7, but the diameter of the annular projection 12 compressed during the insertion causes the projecting edge 7 to return to its original diameter. It receives pressure from the inner surface and is crushed. As a result, oil leakage from the delivery port 6a or the return port 6b can be reliably prevented, and the tube attachment member 2 can be prevented from coming off. The annular projection 12 is for preventing oil leakage, and may be formed in a plurality of lines, and is not limited to four. Moreover, since the tube attachment member 2 is an elastic body as described above, the tube attachment member 2 can be freely attached and detached.

管取付部材２の内周面に形成される環状凸部１３は、少なくとも１本が、胴部１０の内周面に形成されているのが好ましい。この構成によれば、取付時、管取付部材２の軸方向に対して垂直にかかる圧力は、突出縁部７内周面と直に接触する胴部１０の圧力の方がこれと接触のない頭部９にかかる圧力よりも大きい。これにより、環状凸部１３が突出縁部７と密着係合し、より確実に油漏れを防止することができる。また、管取付部材２の内周面に設けられる２本の環状凸部１３は、送出管３aまたは戻り管３bの外周面に形成される環状凹部１４と係合することで油漏れを防止するためのものであるが、これらは環状凸部でなく環状凹部であってもよい。この場合、これと係合する送出管３aまたは戻り管３bの外周面には、環状凸部（後述する）が形成される。   It is preferable that at least one annular convex portion 13 formed on the inner peripheral surface of the pipe attachment member 2 be formed on the inner peripheral surface of the trunk portion 10. According to this configuration, the pressure applied perpendicularly to the axial direction of the pipe mounting member 2 at the time of installation is not in contact with the pressure of the body portion 10 in direct contact with the inner peripheral surface of the projecting edge 7 It is larger than the pressure applied to the head 9. As a result, the annular convex portion 13 closely engages with the projecting edge portion 7, and oil leakage can be prevented more reliably. Further, the two annular convex portions 13 provided on the inner peripheral surface of the pipe mounting member 2 prevent oil leakage by engaging with the annular concave portion 14 formed on the outer peripheral surface of the delivery pipe 3a or the return pipe 3b. However, they may be annular recesses rather than annular protrusions. In this case, an annular convex portion (described later) is formed on the outer peripheral surface of the delivery pipe 3a or the return pipe 3b engaged therewith.

送出管３aおよび戻り管３b、すなわち、油管３について図２および図４に基づいて説明する。これら各油管３は、鉄を材料とし、外周表面がメッキ処理されている。油管３の外径は、これが挿通される管取付部材２の内径よりも若干大きく形成されている。上述したように、油管３のタンク本体１a内における端部にはフィルタ４が取り付けられている。この端部から所定の位置の外周面には、このフィルタ４の位置がタンク本体１a内において最適な位置となるべく、管取付部材２の内周面の環状凸部１３に係合し得る環状凹部１４が設けられている。   The delivery pipe 3a and the return pipe 3b, that is, the oil pipe 3 will be described based on FIG. 2 and FIG. Each of these oil pipes 3 is made of iron and the outer peripheral surface is plated. The outer diameter of the oil pipe 3 is formed to be slightly larger than the inner diameter of the pipe attachment member 2 through which the oil pipe 3 is inserted. As described above, the filter 4 is attached to the end of the oil pipe 3 in the tank body 1a. An annular recess which can be engaged with the annular convex portion 13 of the inner peripheral surface of the pipe mounting member 2 so that the position of the filter 4 can be an optimum position in the tank body 1a on the outer peripheral surface at a predetermined position from this end. 14 is provided.

油管３は、鉄を材料とし、また、表面をメッキ処理していなくとも、油管としての役割を果たし得るものであれば、ステンレスなどであってもよい。
油管３の外径は、これが挿通される管取付部材２の内径よりも若干大きく形成されると述べたが、管取付部材２の弾性により、管取付部材２の内径を拡張させることで、油管３が挿通し得る大きさであればよい。 The oil pipe 3 is made of iron, and may be stainless steel or the like as long as it can play a role as an oil pipe even if the surface is not plated.
Although the outer diameter of the oil pipe 3 is described to be formed slightly larger than the inner diameter of the pipe attachment member 2 through which it is inserted, the elasticity of the pipe attachment member 2 expands the inner diameter of the pipe attachment member 2. It is sufficient if the size 3 can be inserted.

タンク本体１a内におけるフィルタ４の最適位置とは、例えば、小型車両の場合、作動油タンク１も小型の場合が多く、狭いタンク本体１a内でフィルタ４が他の部材と干渉しないような位置や、フィルタ４が、タンク本体１a内の作動油に確実に浸漬するような位置のことである。油管３の外周面に設けられる環状凹部１４は、上述したように、管取付部材２の内周面に環状凹部１３を設ける場合には、これに係合するべく、環状凸部であってもよい。   The optimum position of the filter 4 in the tank body 1a is, for example, in the case of a small vehicle, the hydraulic oil tank 1 is often also small in size, and a position or the like where the filter 4 does not interfere with other members in the narrow tank body 1a , The position where the filter 4 is surely immersed in the hydraulic oil in the tank body 1a. When the annular recess 14 provided on the outer peripheral surface of the oil pipe 3 is provided with the annular recess 13 on the inner peripheral surface of the pipe mounting member 2 as described above, the annular recess may be formed to engage with this. Good.

ここで、作動油タンク１の組立て手順を図５に基づいて説明する。以下は、送出管３aの取り付けについて説明する。
まず、送出管用取付部材２aの穴部８に送出管３aを挿通させる。送出管３aの外径は、送出管用取付部材２aの内径よりも若干大きくされているが、弾性体たる送出管用取付部材２aの内径を拡張させることで、この拡張した内径に従って送出管３aを挿通させることができる。次に、送出管３aの外周面に形成された環状凹部１４と送出管用取付部材２aの内周面に形成された環状凸部１３とが係合する位置まで送出管３aを挿通させる。このとき、内径を拡張され送出管３aが挿通された送出管用取付部材２aには、その弾性により元の内径に戻ろうとする力が軸方向と垂直の方向にかかり、この力によって同方向に送出管３aを締め付ける圧力がかかり、送出管３aと密着係合する。これにより確実に油漏れを防止することができる。 Here, the assembly procedure of the hydraulic oil tank 1 will be described based on FIG. The following describes the attachment of the delivery pipe 3a.
First, the delivery pipe 3a is inserted into the hole 8 of the delivery pipe attachment member 2a. The outer diameter of the delivery tube 3a is slightly larger than the inner diameter of the delivery tube attachment member 2a, but the delivery tube 3a is inserted according to the expanded inner diameter by expanding the inner diameter of the delivery tube attachment member 2a as an elastic body. It can be done. Next, the delivery tube 3a is inserted to a position where the annular recess 14 formed on the outer circumferential surface of the delivery tube 3a and the annular convex portion 13 formed on the inner circumferential surface of the delivery tube mounting member 2a engage. At this time, a force for returning to the original inner diameter is applied in the direction perpendicular to the axial direction to its original inner diameter by its elasticity to the delivery pipe attachment member 2a in which the inner diameter is expanded and the delivery pipe 3a is inserted. A pressure is applied to clamp the pipe 3a, and the pipe 3a is closely engaged with the delivery pipe 3a. Thus, oil leakage can be reliably prevented.

次に、送出管用取付部材２aの胴部１０に対向する側の送出管３aの一方の先端に、送出フィルタ４aを取り付ける。これによって、組立て部材１５が完成する。   Next, the delivery filter 4a is attached to one end of the delivery pipe 3a on the side facing the body 10 of the delivery pipe attachment member 2a. Thus, the assembly member 15 is completed.

次に、この組立て部材１５の送出フィルタ４a側を先にして、組立て部材１５をタンク本体１a内に挿入する。送出口６aの周縁に設けられている突出縁部７の内周面と接触し得る送出管用取付部材２aの胴部１０の外径は、送出口６aの内径よりも大きくされている。しかし、この挿入時には、送出管用取付部材２aの弾性により胴部１０の外径を押し縮めることで胴部１０をタンク本体１aに挿入することができる。このとき、送出管用取付部材２aが元の外径に戻ろうとする弾性力によって、胴部１０の外周に形成された環状突起１２は、突出縁部７の内周面から圧力を受けて押し潰される。また、送出管用取付部材２aのタンク本体１aへの挿入を続けると、送出管用取付部材２aに設けられた顎部１１が突出縁部７に引っ掛かり、これ以上のタンク本体１aへの挿入を防止する。これらにより、送出口６aからの油漏れを確実に防止することができる。   Next, the assembly member 15 is inserted into the tank body 1a with the delivery filter 4a side of the assembly member 15 first. The outer diameter of the trunk portion 10 of the delivery pipe attachment member 2a that can be in contact with the inner circumferential surface of the projecting edge 7 provided on the periphery of the delivery port 6a is larger than the inner diameter of the delivery port 6a. However, at the time of this insertion, the body portion 10 can be inserted into the tank main body 1 a by compressing the outer diameter of the body portion 10 by the elasticity of the delivery pipe attachment member 2 a. At this time, the annular projection 12 formed on the outer periphery of the trunk portion 10 is crushed by receiving pressure from the inner peripheral surface of the projecting edge portion 7 by the elastic force which causes the delivery pipe mounting member 2a to return to the original outer diameter. Be Further, when the delivery pipe attachment member 2a continues to be inserted into the tank main body 1a, the jaws 11 provided on the delivery pipe attachment member 2a are caught by the projecting edge portion 7 to prevent further insertion into the tank body 1a. . As a result, oil leakage from the delivery port 6a can be reliably prevented.

以上により、組立て部材１５がタンク本体１a内に挿入されることで、本発明に係る作動油タンク１の組立てが完成する。なお、戻り管３bの取り付けについても上記と同様に組み立てられる。   As described above, the assembly member 15 is inserted into the tank body 1a, whereby the assembly of the hydraulic oil tank 1 according to the present invention is completed. The attachment of the return pipe 3b is also assembled in the same manner as described above.

上記構成によれば、管取付部材２のみによって、油管３をタンク本体１aに取り付けることができる。そのため、部品点数および製造工数を削減できるとともに、作動油タンクの組立て作業を容易に行うことができる。
すなわち、管取付部材２の内周面に形成された環状凸部１３に係合し得る環状凹部１４が、油管３の外周面の所定位置に形成されている。そのため、フィルタ４を油管３の端部に取り付ける際、フィルタ４の位置をタンク本体１a内における最適位置に配置することができる。これにより、フィルタ４を最適位置にするのに位置決めを意識する必要がないため、組立て作業を容易に行うことができる。
また、管取付部材２の内周面に環状凸部１３、油管の外周面に環状凹部１４がそれぞれ形成されている。そのため、油管３の取付時、これらが管取付部材２の弾性力により密着係合することで確実に油漏れを防止することができる。
さらに、この環状凸部１３の少なくとも一つが、管取付部材２の胴部１０に形成されている。そのため、タンク本体１aの上壁部５に形成されている口部６に管取付部材２を取り付ける際、上記胴部１０が、胴部１０の外周面と接触する突出縁部７の内周面から直接圧迫されることによって、より密着し、より確実に油漏れを防止することができる。 According to the above configuration, the oil pipe 3 can be attached to the tank main body 1 a by only the pipe attachment member 2. Therefore, the number of parts and the number of manufacturing steps can be reduced, and the assembly operation of the hydraulic oil tank can be easily performed.
That is, an annular recess 14 which can be engaged with the annular projection 13 formed on the inner peripheral surface of the pipe mounting member 2 is formed at a predetermined position on the outer peripheral surface of the oil pipe 3. Therefore, when the filter 4 is attached to the end of the oil pipe 3, the position of the filter 4 can be disposed at the optimum position in the tank body 1a. As a result, since it is not necessary to be aware of the positioning to bring the filter 4 into the optimum position, the assembling operation can be easily performed.
Further, an annular convex portion 13 is formed on the inner peripheral surface of the pipe mounting member 2 and an annular recess 14 is formed on the outer peripheral surface of the oil pipe. Therefore, at the time of attachment of the oil pipe 3, these can be closely engaged by the elastic force of the pipe attachment member 2, so that oil leakage can be reliably prevented.
Furthermore, at least one of the annular convex portions 13 is formed on the body portion 10 of the pipe attachment member 2. Therefore, when attaching the pipe mounting member 2 to the opening 6 formed in the upper wall 5 of the tank body 1a, the inner peripheral surface of the projecting edge 7 with which the body 10 contacts the outer peripheral surface of the body 10 By being pressed directly from the side, it is possible to more closely prevent oil leakage more reliably.

１ 作動油タンク
１a タンク本体
２ 管取付部材
２a 送出管用取付部材
２b 戻り管用取付部材
３ 油管
３a 送出管
３b 戻り管
４ フィルタ
４a 送出フィルタ
４b 戻りフィルタ
５ 上壁部
６ 口部
６a 送出口
６b 戻り口
７ 突出縁部
８ 穴部
９ 頭部
１０ 胴部
１１ 顎部
１２ 環状突起
１３ 環状凸部
１４ 環状凹部
１５ 組立て部材 Reference Signs List 1 hydraulic oil tank 1a tank body 2 pipe mounting member 2a delivery pipe mounting member 2b return pipe mounting member 3 oil pipe 3a delivery pipe 3b return pipe 4 filter 4a delivery filter 4b return filter 5 upper wall portion 6 port 6a delivery port 6b return port Reference Signs List 7 projecting edge 8 hole 9 head 10 body 11 jaw 12 annular projection 13 annular projection 14 annular recess 15 assembled member

Claims (2)

油圧機器を搭載した車両に設けられて当該油圧機器の作動油を貯溜するとともに作動油の送出用および戻り用の油管を具備する作動油タンクであって、
作動油タンク本体の上壁部に設けられた作動油の送出口および戻り口にそれぞれ着脱自在に設けられて上記油管が挿通される穴部がそれぞれ形成された一対の管取付部材を具備するとともに、
上記各管取付部材の外周面に断面が三角形状の環状突起をその軸方向に沿って所定間隔置きに複数条形成するとともに、その穴部の内周面に所定間隔を有して少なくとも２本の環状凸部または環状凹部を形成し、
さらに上記各油管を管取付部材の穴部に挿通させて取り付ける際に、上記環状凸部または環状凹部に係合し得る環状凹部または環状凸部を各油管の外周面に形成したことを特徴とする作動油タンク。 A hydraulic oil tank provided in a vehicle equipped with hydraulic equipment for storing hydraulic oil of the hydraulic equipment and having oil pipes for delivery and return of the hydraulic oil,
A hydraulic oil tank main body has a pair of pipe attachment members detachably provided at a delivery port and a return port of hydraulic oil provided at an upper wall portion of the hydraulic oil tank main body and having holes formed therein for inserting the oil pipe. ,
A plurality of annular projections each having a triangular cross section are formed at predetermined intervals along the axial direction on the outer peripheral surface of each of the above-mentioned pipe attachment members, and at least two at a predetermined interval on the inner peripheral surface of the hole. Form an annular projection or an annular recess,
Furthermore, when the above-mentioned oil pipes are inserted through the holes of the pipe attachment member and attached, an annular recess or an annular projection which can be engaged with the annular convex portion or annular concave portion is formed on the outer peripheral surface of each oil pipe. Hydraulic oil tank. 送出用の油管の作動油タンク本体内の端部に円筒形状のフィルタを取り付けるとともに、当該送出用の油管の外周面に形成された環状凸部または環状凹部により、作動油タンク本体内での送出用の油管の長手方向における位置決めを行うようにしたことを特徴とする請求項１記載の作動油タンク。 A cylindrical filter is attached to the end of the hydraulic oil tank main body of the oil pipe for delivery, and the annular convex part or annular concave formed on the outer peripheral surface of the oil pipe for delivery enables the delivery in the hydraulic oil tank main body. The hydraulic oil tank according to claim 1, characterized in that positioning in the longitudinal direction of the main oil pipe is performed.
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